RAD Data comm Modular Access Device with Integrated Router Saving Filter Parameters, Utp, Tcp

FCD-IPMInstallation and Operation ManualChapter 5 Setup Menu

Table 5-31. Advanced Filter Parameters (Cont.)

Parameter	Possible Values	Description
Low Level (IP	UTP	Toggle to the required low level protocol for the filter. If
protocol)	TCP	the port number is defined in decimal format, specify the
	ICMP	low level protocol as UTP or TCP. If no port number is
		defined, specify the low level protocol as UTP, TCP, or
		ICMP. Choose True or False.
Low Level (IPX		Toggle to the required low level protocol for the filter. If a
protocol)		socket is defined in the destination address, a low level
		protocol or socket number may not be specified.
		Conversely, if a socket address or low level is not defined,
		a socket number may be specified.
Mask		A mask is a test pattern that is used to allow certain frame
		patterns only. You define a code against which the frame
		is compared.
		To create a mask, toggle to Yes. Three pairs of codes and
		offsets must be created. The offset defines the point in the
		frame at which the comparison is made.
		For example, an offset of 8 means that the 8th byte is
		compared to the code. The offset can be from the 7th byte
		onwards.
		The frame is made of 3 different portions:
		MAC - is at the beginning of the frame
		LLC - is after the source address in the frame
		DATA - is after the LLC section in the frame.
		For each code-offset pair, select the code format:
		Binary - specify 48 address bits to be either 0,1, or X
		(unspecified)
		Hexadecimal - specify 12 hex digits to be 0-F or X
		(unspecified).
		For each code-offset pair, choose True or False.
		Every frame, at the designated offsets, is compared to the
		three codes in the mask. If all three codes and the
		True-False condition match the code written in the frame,
		the frame passes.
		Note: Only one mask can be defined.
Status	Active	The filter is in use.
	Not Active	Allows you to define filters which can be stored and used
		at a later time.

Saving Filter Parameters

All filters are stored in the Flash Memory, thereby preserving them if the power goes down. When filtering is selected, all of the filters are copied into the RAM. The RAM copy is then used to activate the software filtering process. Any filter which is modified, (by clearing all, deleting one, or changing a parameter) goes into effect immediately. The previous filter also remains in effect until the system is rebooted.

WAN Economy Menu 5-89